Home / 211,486.98-317,215.68-99,191.82

Finding the Fourth Proportional to 211,486.98, 317,215.68 and 99,191.82

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Solution

The fourth proportional to 211,486.98, 317,215.68 and 99,191.82 is: 148,780.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,486.98 : 317,215.68 = 99,191.82 : x
  2. Step 2: Convert to fraction form
    211,486.98/317,215.68 = 99,191.82/x
  3. Step 3: Cross multiply
    211,486.98x = 317,215.68 × 99,191.82
  4. Step 4: Simplify right side
    211,486.98x = 31,465,200,631.74
  5. Step 5: Solve for x
    x = 31,465,200,631.74/211,486.98
  6. Step 6: Final answer
    x = 148,780.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.